books.google.co.in - Aphoristic work on the meditational fundamentals of the yoga school of Indic philosophy....http://books.google.co.in/books/about/The_Yoga_Darsana_Of_Patanjali_With_The_S.html?id=uyB4NbDYQ18C&utm_source=gb-gplus-shareThe Yoga Darsana Of Patanjali With The Sankhya Pravacana Commentary Of Vyasa And The Gloss Of Vacaspati Misra {logos}